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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '44c1479be74b7be93345f9eb108b057bf022dd66170c0408754d43f8d6b7a302' 
  AND token = 'Q9fPwgbuQOn0pkGK8P7+xSRkcxlf/ME/9BucmEGJ/88=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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