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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '45b200d3c96c8b6bc9852032bdd5acd502f3611dc03df7c54c745c8bfa3f7a1a' 
  AND token = 'E402Ih6E8SZ9/mKOukXqUJ6bY2/eBQilguY7/FnXtXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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