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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e2bdef97b05650407a1fc3a91ff7a53d4efa2f2483db32f3bb426768db89a40' 
  AND token = 'OP/m+fD5tYrx0luIP0+qq+a6Z2GVFE0tA92c85NU/KE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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