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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '513291dc25058a2410b2c1596655ad5e8d0c5ffca9a5ef368ffc0f6c0bd24693' 
  AND token = 'qD7ESbMgBB0HmL4imT5PNhFzKgCAmfFnQ7xmt5JsJIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00065

JSON explain

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