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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10639b8613ef1ddee9885c5a3a698cc89cd04a865eb4211fcf87b326c7be03eb' 
  AND token = 'GLiRhohOdoPHuk8zTMQfb6Y+NCqaA6YlIGc4wR4FOVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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