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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed329b0ec1f88bbd395e3cd16c9e3b29a1df4fa61a49d0cb92fd70d7c48d0973' 
  AND token = '30hnmGbUScYuVHCv34IJPI57ummH4E409bGBjhTYSek=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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