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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba6f424c6dc912894ab8e57c9be84b8086ac51d97ffcc3364986a5bb87f1eea0' 
  AND token = 'LhXye6mPXN075J5976/26cO9Kd27muyiFRvhlvavLiQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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