Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fa5317069112535a582f387892eede2155a210a26e04846744e0e3a424cfe3c9' 
  AND token = 'nBWEB+thXFE1NgWACIfAj5J2HPYelXOMkGk4DgNXEOE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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