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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '08582a28bf487083a8c9a44883bcb70f2370b42b8adbb3e8aa7974310b6b2fd9' 
  AND token = 'TCFPFALUvVSi84vy+Dd/5Tea+xLhbihDPts1Xq7p45Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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