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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07f3a8f79dc2108b18e300efc13590acd6f71168f0d252b58491872a45383379' 
  AND token = 'Mbx9ACjMmJG+OfhNC0cA8QojaSgxqe+GfIBhauXJ3dE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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