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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd5cc504b2a9c7edbfe64cc5aaf5dd30416260dd480f46b2468c97cd4f47cffdc' 
  AND token = 'ftpiyA8tl7qFrIODz9Yibe0BBUmmd2onMNsXygMX7+M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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