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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2daaec9d1df848743f40dbef987c1088fc084301960cc206a8f05107eb2f24b2' 
  AND token = 'JFH1P/4v8Bjdt3ODXA6LjEFjdktVpLeBpCM3AMfG7Ic=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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