Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddab08075d86887f1f742cdf7affcdee7afb9731826c63011123a0f991507f2d' 
  AND token = 'riKECTz903P7jorujBeEJ/wqhKLCppItZW4kxT3okc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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