Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '08c7333bfcc2561cd8b3f22e2d17af0c1372a32c0d2d2073df7abf2ac6968e49' 
  AND token = '+Pv7su5tngQQrhX/N31MOyPhOfPjGZyjsBSEUaGZUN0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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