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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '463e8b09b0bd9e5ca1f339849107f6192a0738d955a019f2e453b08b07df9609' 
  AND token = 'Bw4PJ8XpTv/19ftgHA76UxKWLmIRgHcwagIUwYS/t9w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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