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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09b65901ba808eb926a3e5397524119bebab6bf2eefc1219bea727d60ccdd0aa' 
  AND token = 'OSDrrr4mPWICxhI2/IRc5CuhqYVcReiPNXyWY4qZgeY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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