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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11238d60ea30beffb854682e37f9688d50cab20f81a83dfa6ddaf4b079be9d37' 
  AND token = 'aEmw2SwUb7s5dik9yx9uAuEpUVxQJ4Nt3xpc7w6y6O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00067

JSON explain

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