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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c2f92ea14de3b4ec4ec4d9c04dc0ed76699286f282427e05a61092e41c93b5f5' 
  AND token = 'J3LJ4eD2bdI4Q5hEM1gkdlGCH7MA6YErh59onmOIRz0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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