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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '09eb25d8850cc9a869f998482da9ace00009f52d1aba9036ef32e18bb315106c' 
  AND token = 'vBm8x5IPqlWh026OKCQp2uF+O9vl2Npv2mUjxYRuFBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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