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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd24d6a9f6c1d93b6a0c508d5286babf391cab9e4bed7b61e2094052fc30838f5' 
  AND token = 'woxx5Dn9HS33urot34h5OTSAdVTVNA9bbfgNFZedYRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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