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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '634d0f5029b6739b880b2bae175fd71c401b0010ad6e5702ec9de5eb4c6f8ae9' 
  AND token = 'bc8b/UrF9Qe3XE6S/xVgI87wdD+jXNcQHThoi55LErY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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