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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '559a378a4e459092f1d26dbe131a70e73df91482fc565f1cad4d021904e9a11e' 
  AND token = 'tPsfRC8OO8Yy6SxmtkGhKOCE3NkThDEjx3SbyrtLVFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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