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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63de85b2dacc0e28765c254a0b35ca5fb91855672fe43f95f977a34b6d2b057e' 
  AND token = '1VeFwmiwwIB9+E/r8Qo83WwvMozYeRHxCiQ+5BLd7Y0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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