Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f3ce81312f83098b6c2393993e1d97385aec62b0ff71b889069ecc7313c3207b' 
  AND token = 'dAPfFAy+fwUL2QVT61U1RqLE9/A8OMvlaLNzgXlriV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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