Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7325b1329406f68206276229fabc0867aa4c83b2e10bdca7ec015a0b7201465c' 
  AND token = 'dEqDsoItMBNre+nEYH2BvLh3C2er8eAZYOflYu8S3+k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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