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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3357e73509c61a4d2fbe035885dd89dab89b33d5623b4d4cd1ff8199ce9da68' 
  AND token = '3hs6b3CSV7oXR/3NMfvaYbZ//yEWbozIGijjgq1JSk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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