Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b5331db2eccf2e19c4f287c17b92755888645191bab46113aff50bb95111e228' 
  AND token = 'ZsuI/GfgWZ26xAuHGLpqsU8M5hZdidy2cBy0qA0Eihs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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