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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '679e3e9b527e01c3657e2ef4af0228a1743c6fd684418dcdad3a8cbfe0f595a3' 
  AND token = 'wH5LtD2zuox2ifHV0W76TqtSLEADjg76PbSBzETLTdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00112

JSON explain

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