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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '41dd5d01034d8ff1e3793ae24249d9d7887e97d8fcc1b7bfbd4a4fcdc1dbcff1' 
  AND token = 'ahooTVJqUet4G2vJbnH781jiqUN0lG6vdoJ//ZaAFFk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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