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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '009ce377b061a5e866bf3398705ee373b07d8ff72774fd69fbe8cffa1db8b2b2' 
  AND token = 'oi8ymH3ttWEu8YnTIAZL1N2KDV9oM4lEu0eqh3o45KQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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