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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c95a7cf2f15f9f98f09abc276a60a7182d6a5dc8ac5d26459a4a15aa270c1f8' 
  AND token = 'FTAPJGjtscqyevqopwoYix1lbVJ370t1OSG+zgQ5vdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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