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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f3c46302d0407e12bfaf39ef7b584c37f337c18114763f470611c96a0a93f023' 
  AND token = 'BDfasB3aEl9D0dP58yFPlL+IBJi8mPr6Zx8wI/wDGYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}