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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'af8f89121e2b7c180d8b58cae22f4ea690aa75e0ce1723aaf25b2969486021bc' 
  AND token = 'gIqGogFDD3mkqDuNs9tOmkGw5UX6A8ssm0L0LnJ5eR0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00107

JSON explain

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