Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32c9e406b3e822a1aaa7c4fb8819d11038610efe80f7bb5db951e9c1a99facc9' 
  AND token = 'e51bFTfKS4peV/BYtSdv3ngjmvrteJZtfqAAK/NLZw4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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