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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b969ff2643f76b7eb7e6c0bea31084dfc7e211e5f265315ae8a828ad9e95742' 
  AND token = 'ivMqsRPPedCeL7LpvCu3yq7oJPuUw29gjITuMHrRDQE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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