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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e885d81487deea7c7a18ec25b91e40d0c72297c918dc76e66ba79abe54954cc' 
  AND token = 'iHX4GvhafPkR00DBydRs3jhuiBl9nA0nuWqXR3PLOsg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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