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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '148b2a6c22a41b66b5d603d41ef9edfca47b9ede891fcd3c7277e94cfd6cf3c2' 
  AND token = 'Vlp83uOn2O4lzi8GMAworHFposjxbQCWEtfXt3gecxo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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