Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '428e5c4dbe6188488c9d0c343eac85ffc5215b0315ea420c7943caad5c95a382' 
  AND token = '3yW7Ts0xse4ii/NdghLbdVTy5xo0sI8eIHopWG2G4LU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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